Thread: one factoring question

im terrible at factoring..please help?

(4x+1)^2 - (16x^2 + 4x)

i treated it as a difference of squares
so i did:
(4x+1 + 16x^2+4x)(4x+1 - 16x^2 - 4x)
which i further simplified to:
(16x^2 +8x+1)(-16x^2 +1)

and im pretty sure this isnt right.

Hello, checkmarks!

Factor: .

i treated it as a difference of squares . . . . is not a square

Factor the second term: .

Take out the common factor: .

And we have: .